objective: we evaluated structural and functional changes of fresh and frozen-thawed adult mouse spermatogonial stem cells following auto-transplantation into gamma-irradiated testes. materials and methods: in this experimental research, the right testes from adult mice (n=25) were collected, then sertoli and spermatogonial cells were isolated using two-step enzymatic digestion, lectin immobili...

in this study, the amount of total phenol, chlorogenic acid, catechin, quercetin, phloridzin, cyanidin and antioxidant activity of apple (malus domestica) skin and flesh of six iranian cultivars, including: ‘golab kohanz’, ‘sib torsh dirras’, ‘ghara yapragh’, ‘torkman’, ‘ghezel alma’ and ‘abbasi mashhad’, and four commercial cultivars including: ‘golden delicious’, ‘red delicious’, ‘braeburn’ a...

The present study was designed to evaluate antiosteoporotic activity of the fresh juice mixtures obtained from Actinidia deliciosa and Garcinia mangostana as well as the pericarp extract of Garcinia mangostana on postmenopausal osteoporosis. 3-month-old female Wistar rats were ovariectiomized and the treatment began 14 days after ovariectomy and continued for 40 days. Statistically significant ...

the ladybird beetle, hippodamia variegata (goeze) (coleoptera: coccinellidae) is one of the most important natural enemies of the common pistachio psylla, agonoscena pistaciae burckhardt and lauterer (hemiptera: psyllidae). the effects of hexaflumuron and spirodiclofen were investigated on development and carbohydrates and total lipid contents of 4th instar larvae of h. variegata. the insectici...

the purpose of this study was to evaluate the effects of nano-silver (ns), calcium chloride (cacl2) and their combinations on gerbera jamesonii ‘carambole’ cut flowers. the experiment was conducted as a completely randomized design (crd) with 10 treatments and four replications, with three flowers in each replication. treatments consisted of 5 mg l-1 ns, 1% and 2% cacl2, 5 mg l-1 ns+ 1% cacl2, ...

the effects of dietary nucleotide (nt) on growth performance and some haematological parameters of striped catfish (pangasianodon hypophthalmus) were investigated. different levels of the nt (0, 0.25, 0.5, 0.75, 1%) in the diet were used for 10 weeks starting on the fish weighted (1.52 ± 0.11 g). the results showed that nt supplementations did not improve final weight, weight gain, food conserv...

This study was undertaken to identify morphological changes in young seedlings of 5 Iranian almond species (Prunus dulcis, P. eburnea, P. eleagnifolia, P. haussknechti, and P. scoparia) under polyethylene glycol-induced drought stress. Drought stress caused a significant reduction in plant growth parameters such as fresh and dry weights of plant organs, leaf number, total leaf area, and leaf re...

Canna indicaL.roots are used for medicinal purpose. A decoction of the root with fermented rice is used in the treatment of gonorrhea and amenorrhea. The seed of canna is extremely hard, and needs to be "scarified" before sowing. The aim of the present investigation is to determine the hardiness problem of the seed. The seed sample was collected from the IARI, New Delhi in 2008. The wo...

Fruits of orange-fleshed and green-fleshed muskmelon (Cucumis melo L.) were harvested at different times throughout development to evaluate changes in metabolism which lead to sucrose accumulation, and to determine the basis of differences in fruit sucrose accumulation among genotypes. Concentrations of sucrose, raffinose saccharides, hexoses and starch, as well as activities of the sucrose met...